Scraper and grader.



No. 732,621. PATENTED JUNE so, 1903. N. DREIS.

SGRAPER AND GRADER.

' APPLICATION FILED MAY 23. 1902. K0 MODEL. I v 2 SHEETS-SHEET 1.

PATENTED JUNE so, 1903.

DREIS. v SGRAPER AND GRADER. APPLICATION FILED MAY 28, 1992.

uoams Firm co, wno'muma, WASNINGYON c c HO MODEL.

UNITED STATES matted June so, 1903.

. NICHOLAS DREIS, OF HASTINGS, MINNESOTA.

SCRAPER AND GRADER.

SPECIFICATION forming part of Letters Patent No. 732,621, datedJ'une 30, 1903. Application filed May 28, 1902. Serial No. 109,334. (No modeLl opposite directions when at work to fill the scraping-bowls and adapted to be used in connection with a traction-engine and to be guided in any required direction when at work; and it consists in the peculiar construction and combination of devices hereinafter fully set forth and claimed.

In the accompanying drawings, Figure 1 is a top plan View of a scraper and grader constructed in accordance with my invention. Fig. 2 is a vertical longitudinal sectional view of the same. Figs. 3 and 4' are transverse sectional views of the same, taken, respectively, on the planes indicated by the lines a a and b b of Fig. 2.

In the embodiment of my invention I provide a carrying-frame 1, which is widened at its ends and contracted in width at a point midway between the ends, as at 2. The said frame may be of any suitable construction. The frame here shown comprises a pair of longitudinal bars 3, which are appropriately spaced apart, end bars 4, which are disposed transversely with reference to the bars 3 and connect the same together and the said end bars 4 being of such length that their ends will project laterally beyond the outer sides of the bars 3, intermediate cross-bars 5,which correspond in length with the end bars 4 and also connectthe bars 2 together,and side bars 6, which connect the outer endsof the bars 4 5 together at the respective ends of the frame.

A supporting-truck 7 is disposed over the center of the frame 1. In the form of my in vention here shown the said supporting-truck comprises a pair of bolsters 8 9, disposed one above the other, independent axles 10, which are pivoted between thesaid bolsters, near the ends thereof, by bolts 11, which also secure the bolsters under the frame,- and supporting-wheels 12, which are mounted on spindles at the outer ends of the said independent axles.- The latter have their inner said wheels 12, and hence the machine may be guided in any direction. Infoperation one end of the frame 1 will be coupled to asuitable steam or other form of traction-engine. The same-will serve to support the frame 1 in a horizontal or approximately horizontal position and will enable the machine to be moved both forward and back. at one end of the frame 1. This tongue enables the machine to be coupled to a tractioneugine, as hereinbefore indicated, and, if preferred, the frame may beconstructedwith a tongue at each end thereof, so that either end of the frame may be coupled to a tractionengine.

I do not desire tolimit myself to the use of my scraper and graderin connection with a traction-engine, as the same may be drawn by other suitable means; but in practice I find a traction-engine mos-t effioientin alternately moving the scraper and grader forwardly'and rearwardly, which is required in the most economical and efficient operation thereof;

Scraping-bowls of any suitable construction are carried at the respective ends of the frame 1, and the said scraping-bowls face in opposite directions toward therespective ends of the frame. In the form of my invention here shown a gang of scraping-bowls 18 is carried at each end of the frame, there being three I show a tongue 17 of the scraping-bowls in each gang. I will have it understood, however, that'any desired number of scraping-bowls may be, carried by the frame, and I do not limit'myself inthis particular. tion any suitable means may be employed for raising, lowering, and tilting or dumping the scraping-bowls, and I do not limit myself in this particular. In the form of my invention here shown each gang of scraping-bowls is supported by a crank-shaft 19, which has Within the scope of my invenhearings in the frame 1, the said scrapingbowls being each provided with hangers 20, which are pivotally connected at 2O with bifurcated operatinglevers 21, mounted securely upon the cranks of the shaft. The rear ends of the bowls are provided with beveled lugs 25, adapted to be engaged by hooks 26, pivotally connected with the levers 21. Supporting-hooks 22 are also pivotally connected with the frame to engage studs 27 upon the sides of the scraping-bowls. The. ends of the frame are provided with curved arms I 28, terminating in hooks 29, which are adapted to engage the beveled lugs 25 of the scrapingbowls when the latter are tilted, as shown at the right-hand end of Fig. 2 of the drawings. The upper ends of the hook members 22 are connected, by means of link-rods 30, with operating-levers 23, by means of which they may be conveniently manipulated. The operation of this part of the device will be readily understood by reference to Fig. 2. By depressing the levers 21 the forward ends of the bowls may be raised until the studs 27 engage the hooks 22 where they are supported. By continuing the downward movement of the levers the hooks 26 will engage the beveled lugs 25, thus enabling the rear parts of the bowls to be raised clear of the ground, and in this manner the bowls may remain suspended while the load is being carried. When it is desired to tilt the bowls for the purpose of discharging the load, the ends of the levers are first depressed until by manipulating the levers 23 the hooks 22 may be disengaged from the studs 27. The ends of the levers 21 are then raised, the hooks 26 being still in engagement with the beveled lugs 25 until the bowls are completely tilted to the position shown at the right-hand end of Fig. 2. In this position they may be held by the hooks 20 engaging the beveled lugs 25, the latter being of a width sufficient to admit of such engagement.

In the operation of my improved scraper and grader the same is first run forwardly, the front gang of scraping-bowls having been disposed in operative position, thereby causing the front gang of scraping-bowls to become filled with earth. The machine is then stopped and the front gang of bowls either discharged of their contents or elevated, so that they may carry their contents to another point. The rear gang of scraping-bowls having been lowered and disposed in operative position, the machine is then backed, thereby causing the said rear gang of scrapingbowls to be filled with earth, as will be understood, and they may be either at once discharged of their contents, if the conditions permit, or they may be elevated and disposed to carry their contents to another point before discharging the same. It will be understood that while the scraper and grader is being thus moved alternately in reverse directions the same may be appropriately guided by the means hereinbefore described.

Having thus described my invention, I claim 1. A scraper and grader comprising a frame, having oppositely-faced scraping elements at its respective ends, a pair of bolsters disposed one above the other intermediate the ends of thejframe, stub-axles mounted pivotally between said bolsters and having racksegments at their inner ends, a pinion engaging said rack-segments a shaft carrying said pinion and a tiller-wheel, and supportingwheels upon the stub-axles.

2. A scraper and grader comprising a frame having oppositely-faced scraping elements at its respective ends, and a supporting-truck disposed intermediate the ends of the frame, substantially as described.

3. Ascraperand grader comprising a frame having oppositely-faced scraping elements at its respective ends, a pivoted supportingtruck disposed intermediate the ends of the frame, and means to turn the said truck and thereby guide the scraper and grader, substantially as described.

In testimony that I claim the foregoing as my own I have hereto affixed my signature in the presence of two witnesses.

NICHOLAS DREIS.

\Vitnesses:

JOHN FICKER, MATHEW FIOKER. 

